import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:flutter_html/style.dart';
import 'package:image_picker/image_picker.dart';
import 'package:magic_car/UI/Loading.dart';
import 'package:magic_car/common/PrimayButton.dart';
import 'package:magic_car/common/nodata.dart';
import 'package:magic_car/common/showbottomsheet.dart';
import 'package:magic_car/user/anserdetail.dart';
import 'package:magic_car/user/checkstudyinfo.dart';
import 'package:magic_car/user/mytask.dart';
import 'package:magic_car/user/pickvideo.dart';
import 'package:magic_car/user/taskdetail.dart';
import 'package:magic_car/user/testvideo.dart';
import 'package:magic_car/util/HttpHelper.dart';
import 'package:magic_car/util/colors.dart';
import 'package:modal_progress_hud/modal_progress_hud.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:toast/toast.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:flutter_full_pdf_viewer/full_pdf_viewer_scaffold.dart';
import 'dart:io';
import 'package:flutter/foundation.dart';
import 'package:path_provider/path_provider.dart';
// import 'package:flutter_file_preview/flutter_file_preview.dart';

class TaskPage extends StatefulWidget {
  TaskPage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => new _MyHomePageState();
}

class _MyHomePageState extends State<TaskPage> {
  List formList;
  ScrollController _controller = new ScrollController();
  int page = 1;
  bool end = false;
  String keyword = "";
  var imgsLeng = 0;
  String current_pdf_url;
  File videos;
  bool _saving = false;
  initState() {
    super.initState();
    _controller.addListener(() {
      if (_controller.position.pixels == _controller.position.maxScrollExtent) {
        print('滑动到了最底部');
        loadData();
      }
    });

    formList = [];
    loadData();
  }

  //加载数据
  loadData() async {
    // if(keyword!=""){
    //   print(keyword);
    // if(end)return;
    // }
    if (end) return;
    Map<String, String> map = new Map();
    SharedPreferences pref = await SharedPreferences.getInstance();
    map["id"] = pref.getString('uid');
    map["page"] = page.toString();
    map["keyword"] = keyword;
    print(map);

    HttpHelper.post(HttpHelper.API_GetTask, (data) async {
      if (data != null) {
        print(data);
        print(data["info"].length.toString());
        if (data["info"].length == 0) {
          Toast.show('暂无更多数据', context);
        } else {
          if (data["code"].toString() == "1") {
            if (data["info"].length < 10) {
              setState(() {
                end = true;
              });
            }
            if (page > 1) {
              List add = data["info"];
              formList.addAll(add);
              setState(() {
                formList = formList;
              });
            } else {
              setState(() {
                formList = data["info"];
                page = page + 1;
              });
            }
          }
        }
      }
    }, params: map);
  }

  Widget buildImgs(item) {
    List<Widget> tiles = [];

    Widget content;

    List items = item["image_url"];
    print(items.length.toString());

    for (var i = 0; i < items.length; i++) {
      //List temp1 = items[i] as List;
      tiles.add(Padding(
        padding: new EdgeInsets.fromLTRB(5, 0, 0, 10),
        child: GestureDetector(
            onTap: () {
              // print('点击查看图片');
              // Navigator.of(context).push(
              //   NinePicture(items, i),
              // );
            },
            child: Image.network(items[i], width: 100, height: 100)),
      ));
    }
    content = new Wrap(
        children: tiles //重点在这里，因为用编辑器写Column生成的children后面会跟一个<Widget>[]，
        //此时如果我们直接把生成的tiles放在<Widget>[]中是会报一个类型不匹配的错误，把<Widget>[]删了就可以了
        );
    return content;
  }

  Widget buildcontent() {
    List<Widget> tiles = [];
    Widget content;
    if (formList.length > 0) {
      for (var item in formList) {
        tiles.add(Padding(
            padding: new EdgeInsets.fromLTRB(15, 15, 15, 0),
            child: Container(
              decoration: new BoxDecoration(
                color: Colors.white,
              ),
              child: new GestureDetector(
                  behavior: HitTestBehavior.opaque,
                  onTap: () async {
                    Navigator.of(context)
                        .push(new MaterialPageRoute(builder: (_) {
                      return new TaskdetailPage(item['id']);
                    }));
                  },
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.start,
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: <Widget>[
                      Padding(
                        padding: new EdgeInsets.fromLTRB(20, 15, 20, 10),
                        child: Column(
                          children: <Widget>[Text(item["title"])],
                        ),
                      ),
                      Padding(
                        padding: new EdgeInsets.fromLTRB(20, 0, 20, 10),
                        child: Column(
                          children: <Widget>[
                            Text('任务需求：' + item["require_data_des"],
                                style: TextStyle(fontSize: 13,color: Color.fromRGBO(120, 120, 120, 1)))
                          ],
                        ),
                      ),
                      Padding(
                        padding: new EdgeInsets.fromLTRB(20, 0, 20, 10),
                        child: Column(
                          children: <Widget>[
                            Text(
                              '任务奖励：' + item["reward_data_des"],
                              style: TextStyle(fontSize: 13,color: Color.fromRGBO(120, 120, 120, 1)),
                            )
                          ],
                        ),
                      ),
                      // Padding(
                      //   padding: new EdgeInsets.fromLTRB(20, 0, 20, 10),
                      //   child: Row(
                      //     children: <Widget>[
                      //       Text(
                      //         '资料类型：' + item["type_str"],
                      //         style: TextStyle(fontSize: 13),
                      //       ),
                      //       Padding(
                      //           padding: new EdgeInsets.fromLTRB(5, 0, 0, 0),
                      //           child: Image.asset(
                      //               item['cancheck'] == "1"
                      //                   ? 'resource/images/user/unlock.png'
                      //                   : 'resource/images/user/lock.png',
                      //               width: 20,
                      //               height: 15)),
                      //     ],
                      //   ),
                      // ),
                      // item['image_url'].length > 0
                      //     ? Padding(
                      //         padding: new EdgeInsets.fromLTRB(5, 10, 20, 10),
                      //         child: buildImgs(item),
                      //         // child: Row(
                      //         //   children: <Widget>[Text('总试题数：16')],
                      //         // ),
                      //       )
                      //     : new Container(height: 0),
                      Padding(
                        padding: new EdgeInsets.fromLTRB(20, 0, 20, 10),
                        child: Row(
                          children: <Widget>[
                            Expanded(
                                flex: 1,
                                child: Text(
                                  item["starttime"],
                                  style: TextStyle(
                                      color: Color.fromRGBO(153, 153, 153, 1),
                                      fontSize: 13),
                                )),
                          ],
                        ),
                      ),
                    ],
                  )),
            )));
      }
    }
    content = new Column(
        children: tiles //重点在这里，因为用编辑器写Column生成的children后面会跟一个<Widget>[]，
        //此时如果我们直接把生成的tiles放在<Widget>[]中是会报一个类型不匹配的错误，把<Widget>[]删了就可以了
        );
    return content;
  }

  uploadVideo(type) async {
    // var videofile;

    // if (type == 1) {
    //   videofile = await ImagePicker.pickVideo(source: ImageSource.camera);
    // } else {
    //   videofile = await ImagePicker.pickVideo(source: ImageSource.gallery);
    // }
    // if (videofile == null) return;
    // // File _files = await FlutterNativeImage.compressImage(image.path);
    // File _files = videofile;
    // Map<String, String> map = new Map();

    // HttpHelper.upLoadvideo(_files, (data) {
    //   print(data);
    //   if (data.containsKey('code')) {
    //     Toast.show(data['msg'], context);
    //   } else {}
    // }, params: map);
  }

  Widget build(BuildContext context) {
    return
        // new MaterialApp(
        //     title: '结构件',
        //     home:
        new Scaffold(
            appBar: new AppBar(
              title: new Text(
                '任务',
                style: TextStyle(color: Colors.black),
              ),
              backgroundColor: Colors.white,
              elevation: 0,
              // backgroundColor: Color.fromRGBO(255, 204, 48, 1),
            ),
            // floatingActionButtonLocation: FloatingActionButtonLocation.endFloat,
            // floatingActionButton: FloatingActionButton(
            //   onPressed: () {
            //     Navigator.pushNamed(context, "upAsk");
            //   },
            //   child: Icon(
            //     Icons.add,
            //     color: Colors.white,
            //   ),
            //   backgroundColor: Color.fromRGBO(27, 182, 251, 1),
            // ),
            body: ModalProgressHUD(
                // color: Colors.blue,
                inAsyncCall: _saving,
                child: new Center(
                    child: Container(
                        decoration: new BoxDecoration(
                          color: Color.fromRGBO(238, 238, 238, 1),
                        ),
                        child:
                            // new ListView(children: <Widget>[
                            Stack(
                          children: <Widget>[
                            Align(
                              alignment: Alignment.topLeft,
                              child: SizedBox(
                                  width: double.infinity,
                                  height: 60,
                                  child: Padding(
                                      padding: new EdgeInsets.fromLTRB(
                                          15, 10, 15, 10),
                                      // padding: new EdgeInsets.all(10),
                                      child: Container(
                                          child: Row(
                                              mainAxisAlignment:
                                                  MainAxisAlignment.end,
                                              children: <Widget>[
                                            Expanded(
                                              child: new Container(
                                                child: new TextField(
                                                  onSubmitted: (value) {
                                                    print(value);
                                                    //if(value=="")return;
                                                    setState(() {
                                                      keyword = value;
                                                      page = 1;
                                                      end = false;
                                                    });
                                                    print('搜索');
                                                    loadData();
                                                  },
                                                  // controller: _phonecontroller,
                                                  decoration:
                                                      new InputDecoration(
                                                          border:
                                                              InputBorder.none,
                                                          hintText: '搜索',
                                                          prefixIcon: Icon(
                                                              Icons.search)),
                                                ),
                                                decoration: new BoxDecoration(
//背景
                                                  color: Colors.white,
                                                  //设置四周圆角 角度 这里的角度应该为 父Container height 的一半
                                                  borderRadius:
                                                      BorderRadius.all(
                                                          Radius.circular(
                                                              25.0)),
                                                  //设置四周边框
                                                  border: new Border.all(
                                                      width: 1,
                                                      color: Colors.white),
                                                ),
                                              ),
                                            ),
                                            // FlatButton(
                                            //     onPressed: () {
                                            //       Navigator.pushNamed(context, "upAsk");
                                            //     },
                                            //     child: new Text(
                                            //       "我要提问",
                                            //       style: TextStyle(
                                            //           color: Color.fromRGBO(
                                            //               27, 182, 251, 1),
                                            //           fontSize: 13),
                                            //     ))
                                          ])))),
                            ),
                            Align(
                                alignment: Alignment.bottomCenter,
                                child: Padding(
                                    padding:
                                        new EdgeInsets.fromLTRB(0, 60, 0, 60),
                                    child: new RefreshIndicator(
                                      onRefresh: _onRefresh,
                                      child: formList.length == 0 && page == 1
                                          ? Nodata()
                                          : new ListView(
                                              controller: _controller,
                                              children: <Widget>[
                                                  buildcontent()
                                                ]),
                                    ))),
                            Align(
                                alignment: Alignment.bottomCenter,
                                child: Padding(
                                    padding:
                                        new EdgeInsets.fromLTRB(15, 60, 15, 10),
                                    child: PrimayButton(
                                      containercolor:
                                          Color.fromRGBO(238, 238, 238, 1),
                                      text: '我的任务',
                                      width: double.infinity - 30,
                                      height: 40,
                                      textcolor: Colors.white,
                                      bordercolor: Colours.app_main,
                                      colors: Colours.app_main,
                                      borderwidth: 1,
                                      onPressed: () {
                                        //  Navigator.of(context).push(
                                        //     new MaterialPageRoute(builder: (_) {
                                        //   return new PickVideo();
                                        // }));
                                        Navigator.of(context).push(
                                            new MaterialPageRoute(builder: (_) {
                                          return new MyTaskPage();
                                        }));
                                      },
                                    )))
                          ],
                        )))
                //])))),
                ));
  }

  Future<Null> _onRefresh() async {
    await Future.delayed(Duration(seconds: 3), () {
      print('refresh');
      setState(() {
        page = 1;
      });
      loadData();
    });
  }
}
